Hi, On 2023-05-09 13:38:24 -0700, Jeff Davis wrote: > On Tue, 2023-05-09 at 12:02 -0700, Andres Freund wrote: > > I don't think the approach of not having any sort of "registry" of > > whether > > anybody is waiting for the replay position to be updated is > > feasible. Iterating over all walsenders slots is just too expensive - > > Would it work to use a shared counter for the waiters (or, two > counters, one for physical and one for logical), and just early exit if > the count is zero?
That doesn't really fix the problem - once you have a single walsender connected, performance is bad again. Greetings, Andres Freund
